The G61MP is a high-efficiency gas furnace from Lennox. With more than ten models available, heating capacities in this series range from 44,000 to 132,000 BTU/H and models can reach up to 95 percent AFUE. Units can be installed in upflow, downflow, horizontal right and left positions.
Featuring two-stage heating, the manufacturer explains that the G61MP can help increase efficiency by operating on a lower heat setting until a change in the temperature is detected. At that time, the unit will automatically transition to a high heat setting.
Additional features of this series include: an aluminized stainless steel heat exchanger, continuous low-speed fan, insulated blower compartment to decrease operating noise, and a diagnostic control board. All units are equipped for use with natural gas, but kits are available for conversion to LPG operation.
Thank goodness our installer, R.G. Wahl in Saline Mich replaced this furnace under warranty. Ironically, the two-stage blower motor is supposed to be quieter than the single stage in the g51 model, but that just was not true for us. The blower motor kept our household up at night. It would whine like a jet plane taking off, then after awhile whine back down to a lower level, then it would either turn off (thankfully), or whine back up. We never knew what it was going to do next… whine up, or turn off, and it just kept us on edge when we were trying to sleep. We are so thankful that our installer replaced it with a different model under warranty, at no charge. Whew!!!!
Saline, MI
"Well made UNIT"
5.0 rating
Very Satisfied
Okay so I bought this unit from my boss. I am a qualified gas fitter and I do work on Lennox products. Before I worked on them I was working on American Standard/Trane(Same furnace just different badge). Lennox is well made American product. The thing with gas fired appliances they still need to be maintained. Myself being a gas fitter that works on these unit would recommend this furnace if you are looking to maintain it.
Espanola Ont
"White-rodgers board"
1.0 rating
Very Unsatisfied
I have Lennox G61mp furnace which I bought on-line. I Am a pipefitter\hvac tech employed in the auto industry.Of course I installed the furnace myself!! The white-rodgers board went bad.I Called Lennox about the 10yr. parts warranty and was informed unless the furnace was installed and serviced by Lennox I do not have a warranty at all.I Bought 2 boards on amazon.com $170.00 each. Lennox wanted $500.00 cash for the 15 min easy fix. Beware of Lennox unless you work for them. I Only hope I can last the winter.
Although there are quite a few troubleshooting inquiries posted around the web, consumers and contractors generally like the Lennox G61MP. Homeowners on hvac-talk.com are happy with this unit, noting its quiet and efficient operation. Contractors also recommend this unit to shoppers, saying that if it’s installed correctly it should give years of quality performance.
Among the positive reviews, forums including justanswer.com host a handful of troubleshooting inquiries for this unit. Problems such as the igniter not working, faulty control boards, the unit failing to fully heat, and component failures are among the issues reported.
Question and Answer
Question:
What does a 4+3 code on my G61MP mean?
Answer:
A 4+3 code on the Lennox G61MP is a Watchguard code which means “Exceeded maximum number of retries or last retry was due to flame failure”.
Lennox G61MP Model Numbers
The G61MP is available in different models which vary in efficiency and capacity.
Model Number
AFUE
BTUs per Hour
G61MP-36B-045-*
94.1
44,000
G61MP-36B-045-**
94.1
44,000
G61MP-36B-070-*
94.1
66,000
G61MP-36B-070-**
94.1
66,000
G61MP-36B-071-*
95
66,000
G61MP-48C-090-*
94.1
88,000
G61MP-48C-090-**
94.1
88,000
G61MP-48C-110-*
94.1
110,000
G61MP-48C-110-**
94.1
110,000
G61MP-60C-090-*
94.1
88,000
G61MP-60C-090-**
94.1
88,000
G61MP-60C-091-*
95
88,000
G61MP-60C-091-**
95
88,000
G61MP-60C-110-*
94.1
110,000
G61MP-60C-110-**
94.1
110,000
G61MP-60C-111-*
95
110,000
G61MP-60C111-**
95
110,000
G61MP-60D-135-*
94.1
132,000
G61MP-60D-135-**
94.1
132,000
G61MP Warranty
The G61MP is equipped with a 5-year limited warranty on all covered components. In addition, Lennox offers a lifetime limited warranty on the heat exchanger. Homeowners should contact a local dealer for registration information specific to their unit.
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